JP7155652B2 - Vehicle light guide and vehicle lamp - Google Patents

Description

The present invention relates to a vehicle light guide and a vehicle lamp.

2. Description of the Related Art A vehicle lamp equipped with a plate-shaped vehicle light guide that guides light from a light source and emits linear light is known (see, for example, Patent Document 1).

JP 2017-4663 A

In the light guide for vehicles as described above, it is required to improve the appearance when the light is emitted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular light guide and a vehicular lamp capable of improving the appearance of a light-emitting state.

A vehicular light guide according to the present invention has an incident surface on which light is incident, an incident control section for directing a traveling direction of the light incident from the incident surface to a forward direction in a vehicle-mounted state, and a plate shape, A first surface and a second surface parallel to each other are arranged so as to be positioned on the lower side and the upper side in a vehicle-mounted state, and the light from the incidence control unit is directed along the first surface and the second surface to the front side. a base having a first emission surface on a front end face for guiding light to and emitting the guided light forward; and a base provided on at least one of the first surface and the second surface of the base, an inclined reflecting surface that reflects a part of the light passing through the first surface and the second surface in a direction inclined with respect to the first surface and the second surface; a projecting portion that guides the light reflected by the inclined reflecting surface and has a second output surface that outputs the guided light on the front end surface.

In the vehicular light guide described above, the projecting portion may project downward and forward with respect to the first exit surface in a vehicle-mounted state.

In the vehicle light guide described above, the inclined reflective surface may be disposed on the upper surface of the base portion in a vehicle-mounted state, and the front side thereof in the vehicle-mounted state may be inclined downward.

In the vehicle light guide described above, the incidence control section is disposed at a rear end of the base in a vehicle-mounted state and protrudes downward. A base-side reflective surface may be provided at an upper end for reflecting the light incident from the base toward the base, and the base-side reflective surface may be connected to the upper surface of the base.

In the vehicle light guide described above, the incidence control unit includes a first incident surface facing a light emitting surface of a light source that emits light, and is arranged around the first incident surface so as to surround the light emitting surface. and an incident-side reflective surface for reflecting light incident on the second incident surface toward the base-side reflective surface, wherein the incident-side reflective surface reflects light incident on the second incident surface. and a portion of the light reflected by the incident-side reflecting surface may reach the inclined reflecting surface.

A vehicle lamp according to the present invention includes a light source and the above-described vehicle light guide that guides light from the light source and emits it forward in a vehicle-mounted state.

ADVANTAGE OF THE INVENTION According to this invention, the appearance in the light-emitting state can be improved.

FIG. 1 is a front view showing an example of a vehicle lamp according to this embodiment. FIG. 2 is a front view showing an example of the vehicle light guide according to this embodiment. FIG. 3 is a plan view showing an example of a vehicle light guide. FIG. 4 is a diagram showing the configuration along the AA cross section in FIG. FIG. 5 is a diagram showing an example of a case where the vehicle light guide guides light.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a vehicle light guide and a vehicle lamp according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same. In the following description, front and rear, up and down, and left and right directions are the directions in which the vehicle light guide and the vehicle lamp are mounted in the vehicle, and when viewed from the driver's seat in the traveling direction of the vehicle. Indicates direction in In this embodiment, the up-down direction is parallel to the vertical direction, and the left-right direction is the horizontal direction.

FIG. 1 is a front view showing an example of a vehicle lamp 200 according to this embodiment. As shown in FIG. 1 , the vehicle lamp 200 includes a light source 50 , a vehicle light guide 100 , a lamp housing 110 and a lamp lens 120 . In this embodiment, the vehicle lamp 200 is, for example, a clearance lamp. Also, in the lamp chamber defined by the lamp housing 110 and the lamp lens 120, in addition to the vehicle lamp 200, for example, a low beam lamp, a high beam lamp, a fog lamp, a cornering lamp, and the like may be arranged.

The vehicle lamp 200 is attached to the left and right sides of the front portion of the vehicle. In the present embodiment, a vehicle lamp that is attached to the front left side of a vehicle will be described as an example. The vehicle lamp mounted on the right side of the front part of the vehicle is bilaterally symmetrical with respect to the vehicle lamp 200, and the same explanation can be given. In the vehicle lamp 200 mounted on the left side of the vehicle, the left side is the outside of the vehicle and the right side is the inside of the vehicle. In addition, in the vehicle lamp mounted on the right side of the vehicle, the outside of the vehicle is the right side, and the inside of the vehicle is the left side.

<Light source>
The light source 50 is, for example, a semiconductor type light source such as an LED, an OEL, or an OLED (organic EL). The light source 50 has a light emitting surface that emits light so as to form a Lambertian distribution. The light source 50 is arranged parallel to a horizontal plane with its light emitting surface facing upward, for example. A plurality of light sources 50 are arranged in the horizontal direction, for example.

<Vehicle light guide>
FIG. 2 is a front view showing an example of the vehicle light guide 100 according to this embodiment. FIG. 3 is a plan view showing an example of the vehicle light guide 100. As shown in FIG. FIG. 4 is a diagram showing the configuration along the AA cross section in FIG. As shown in FIGS. 2 to 4 , the vehicle light guide 100 includes an incident control section 10 , a base section 20 , an inclined reflecting surface 30 and a projecting section 40 .

<Incident controller>
The incidence controller 10 guides the light from the light source 50 to the base 20 . The incidence controller 10 is provided for each light source 50 . The incidence control section 10 has a first incidence surface (incidence surface) 11 and a second incidence surface (incidence surface) 12 , an incident side reflecting surface 13 and a base side reflecting surface 14 . Light from the light source 50 is incident on the first incident surface 11 and the second incident surface 12 . The first incident surface 11 is arranged above the light source 50 and faces the light emitting surface. The first incident surface 11 is a convex surface protruding toward the light source 50 side. The second incident surface 12 is arranged on the side of the light source 50 so as to surround the light emitting surface of the light source 50 and the first incident surface 11 .

The incident-side reflecting surface 13 reflects the light incident from the second incident surface 12 upward toward the base-side reflecting surface 14 . The base-side reflecting surface 14 reflects light incident from the first incident surface 11 and light incident from the second incident surface 12 and reflected by the incident-side reflecting surface 13 forward, that is, to the base 20 side. The base-side reflecting surface 14 is planar. The base-side reflecting surface 14 is connected to the upper end (second surface 22) of the base 20, which will be described later.

<Base>
The base 20 is plate-shaped. As shown in FIG. 3 , the base 20 is long in the left-right direction and short in the front-rear direction, and curves rearward from the end on the inside of the vehicle to the end on the outside of the vehicle. The incidence control units 10 described above are arranged at the rear end portion with respect to the base portion 20, and are arranged side by side in the left-right direction.

As shown in FIG. 4 , the base 20 has a first surface 21 on the lower side, a second surface 22 on the upper side, and a side surface 23 connecting the first surface 21 and the second surface 22 . The first surface 21 and the second surface 22 are parallel to each other. The second surfaces 22 are arranged on both sides of an inclined reflective surface 30 to be described later in the front-rear direction. The side surface 23 includes a first exit surface 24 that is the front end surface of the base 20 . The first emission surface 24 emits forward part of the light guided by the base 20 .

<Inclined reflective surface>
The inclined reflective surface 30 is arranged, for example, at or near the center of the second surface 22 of the base 20 in the front-rear direction. The inclined reflective surface 30 is inclined with respect to the first surface 21 and the second surface 22 . In this embodiment, the inclined reflective surface 30 is planar, and is arranged with the front side inclined downward with respect to the first surface 21 and the second surface 22 . By providing the inclined reflective surface 30, the thickness t2 of the base 20 on the front side of the inclined reflective surface 30 is smaller than the vertical dimension (thickness) t1 on the rear side of the inclined reflective surface 30. there is

The inclined reflective surface 30 reflects part of the light that is reflected by the base-side reflective surface 14 and passes through the base 20 in a direction that is inclined with respect to the first surface 21 and the second surface 22 . In this embodiment, the inclined reflective surface 30 is arranged on the second surface 22 and is arranged at a position where the light reflected above the base-side reflective surface 14 of the incidence control unit 10 reaches. Therefore, the inclined reflective surface 30 reflects downward the light reflected by the upper portion of the base-side reflective surface 14 .

<Protrusion>
The projecting portion 40 is provided to project from the base portion 20 in at least one direction in the vertical direction. In this embodiment, the protrusion 40 protrudes downward and forward with respect to the first emission surface 24 . A plurality of protrusions 40 are arranged at intervals in the left-right direction. The number of protrusions 40 may be different from or the same as the number of light sources 50 and incidence controllers 10 .

The projecting portion 40 has a prism portion 41 and a second exit surface 42 . The prism portion 41 is arranged on the rear end surface of the projecting portion 40 . The prism portion 41 reflects the light reaching the projecting portion 40 forward. The second emission surface 42 is provided on the front end surface of the projecting portion 40 . The second emission surface 42 forwardly emits the light reflected by the prism portion 41 . The projecting portion 40 has vertical and horizontal dimensions that gradually decrease from the inside to the outside of the vehicle.

Next, a case will be described in which light is incident on the vehicle light guide 100 configured as described above from the first incident surface 11 . FIG. 5 is a diagram showing an example in which the vehicle light guide 100 guides light. As shown in FIG. 5 , the light emitted from the light source 50 enters from the first incident surface 11 and the second incident surface 12 .

The light L<b>1 incident from the first incident surface 11 travels straight to reach the base-side reflecting surface 14 and is reflected by the base-side reflecting surface 14 toward the base 20 . The light L<b>1 reflected toward the base 20 travels through the base 20 along the first surface 21 and the second surface 22 and is emitted from the first emission surface 24 . The light emitted from the first emission surface 24 is visually recognized as linear light along the first surface 21 and the second surface 22 .

Further, part of the light L2 (light emitted backward from the light source 50 in FIG. 5) of the light incident from the second incident surface 12 is reflected by the incident-side reflecting surface 13 and reaches the base-side reflecting surface 14. Then, the light is reflected toward the base 20 at the lower end of the base-side reflecting surface 14 . This light L2 travels along the first surface 21 of the base 20 and is emitted from the first emission surface 24 . The light emitted from the first emission surface 24 is visually recognized as linear light along the first surface 21 and the second surface 22 .

On the other hand, part of the light L3 (the light emitted forward from the light source 50 in FIG. 5) of the light incident from the second incident surface 12 is reflected by the incident-side reflecting surface 13 and reaches the base-side reflecting surface 14. Then, the light is reflected toward the base 20 at the upper end of the base-side reflecting surface 14 . This light L3 travels along the second surface 22 of the base 20 . In the present embodiment, since the inclined reflecting surface 30 is formed on a part of the second surface 22 , the light L3 reaches the inclined reflecting surface 30 . As described above, in the present embodiment, the incident-side reflecting surface 13 is arranged such that part of the light L3 of the light incident on the second incident surface 12 reaches the inclined reflecting surface 30 .

The light L<b>3 reaching the inclined reflecting surface 30 is reflected downward by the inclined reflecting surface 30 . This light L3 is reflected upward by the second surface 22 of the base portion 20 and further reflected downward by the first surface 21 while proceeding toward the front side of the vehicle. In this way, the light L3 travels toward the front side of the vehicle while being repeatedly internally reflected by the second surface 22 and the first surface 21 . The light L3 is then guided to the projecting portion 40 at the front end portion of the base portion 20 . The light L3 guided to the projecting portion 40 is reflected forward by the prism portion 41 on the rear side of the projecting portion 40 and emitted from the second exit surface 42 on the front side. The light L<b>3 emitted from the second emission surface 42 is visually recognized as light having a shape corresponding to the projecting portion 40 below the first emission surface 24 .

As described above, the vehicle light guide 100 according to the present embodiment has the first incident surface 11 and the second incident surface 12 on which light is incident, and the light is incident from the first incident surface 11 and the second incident surface 12. The incident control unit 10 directs the traveling direction of the light forward, and the plate-like first surface 21 and the second surface 22 parallel to each other are arranged so as to be positioned on the lower side and the upper side. light is guided forward along the first surface 21 and the second surface 22 and the guided light is emitted forward. an inclined reflecting surface 30 which is provided on at least one of the first surface 21 and the second surface 22 and reflects part of the light passing through the base 20 in a direction inclined with respect to the first surface 21 and the second surface 22; a projecting portion 40 which is provided projecting in at least one of the vertical directions from and guides the light reflected by the inclined reflecting surface 30 and has a second output surface 42 for outputting the guided light on the front end surface; Prepare.

According to this configuration, the projecting portion 40 is provided on the base portion 20, and part of the light from the incident control portion 10 is reflected by the inclined reflecting surface 30 in a direction inclined with respect to the first surface 21 and the second surface 2. Part of the light can be guided to the protrusion 40 and emitted from the second emission surface 42 of the protrusion 40 . Therefore, the observer can visually recognize the light emitted from the second emission surface 42 in addition to the linear light emitted from the first emission surface 24 . This makes it possible to improve the appearance in the lighted state.

In the vehicle light guide 100 according to the present embodiment, the projecting portion 40 projects downward and forward with respect to the first exit surface 24 in the vehicle-mounted state. With this configuration, the light emitted from the first emission surface 24 and the light emitted from the second emission surface 42 can form a light emission state with a sense of depth.

In the vehicle light guide 100 according to the present embodiment, the inclined reflective surface 30 is arranged on the second surface 22, which is the upper surface of the base 20, and the front side is inclined downward. With this configuration, the traveling direction of part of the light guided forward in the base portion 20 can be directed downward. light can be made to reach.

In the vehicle light guide 100 according to this embodiment, the incidence control unit 10 is arranged at the rear end of the base 20 and protrudes downward. and has a base-side reflecting surface 14 at the upper end that reflects the light incident from the first incident surface 11 and the second incident surface 12 toward the base 20 side, and the base-side reflecting surface 14 is the upper surface of the base 20 is connected to the second surface 22 . With this configuration, part of the light reflected above the base-side reflecting surface 14 can reach the inclined reflecting surface 30 . Thereby, light can be reliably supplied to the projecting portion 40 .

In the vehicle light guide 100 according to the present embodiment, the incidence control unit 10 includes a first incident surface 11 facing the light emitting surface of the light source 50, and is arranged around the first incident surface 11 so as to surround the light emitting surface. and an incident-side reflecting surface 13 that reflects light incident on the second incident surface 12 toward the base-side reflecting surface 14 . It is arranged so that a part of light L3 out of the incident light reaches the inclined reflecting surface 30 . This configuration allows the light L3 to easily reach the inclined reflecting surface 30 .

A vehicle lamp 200 according to this embodiment includes a light source 50 and the above-described vehicle light guide 100 that guides light from the light source 50 and emits it forward in a vehicle-mounted state. With this configuration, it is possible to provide the vehicle lamp 200 that has an excellent appearance in the light emitting state.

The technical scope of the present invention is not limited to the above embodiments, and modifications can be made as appropriate without departing from the scope of the present invention. For example, in the above embodiment, the configuration in which the inclined reflecting surface 30 is provided on the second surface 22 of the base 20 has been described as an example, but the present invention is not limited to this. The inclined reflective surface 30 may be provided on the first surface 21 of the base 20 . In this case, the inclined reflecting surface 30 can be configured such that the front side is inclined upward. Also, the inclined reflective surface 30 may be provided on both the first surface 21 and the second surface 22 of the base 20 .

In the above-described embodiment, the inclined reflective surface 30 is provided in the central portion of the base portion 20 in the front-rear direction. However, the configuration is not limited to this. For example, the inclined reflective surface 30 may be arranged at a position connected to the base-side reflective surface 14 or may be arranged at a position connected to the first exit surface 24 . In addition, the inclined reflecting surface 30 may be provided on the entire second surface 22 in the front-rear direction. With this configuration, the light reflected by the inclined reflecting surface 30 can be more reliably supplied to the projecting portion 40 .

Moreover, in the above embodiment, the projecting portion 40 has been described as an example of a configuration in which the projecting portion 40 is provided to project downward from the base portion 20, but the present invention is not limited thereto. The protruding portion 40 may be configured to protrude upward from the base portion 20 . Further, in the above-described embodiment, the projecting portion 40 has been described by taking as an example a configuration in which the projecting portion 40 is provided to project forward with respect to the first emission surface 24, but the present invention is not limited thereto. The protrusion 40 may be configured to protrude rearward from the first emission surface 24 .

H... Horizontal plane, L1, L2, L3... Light, S... Predetermined surface, 10... Incidence control unit, 11... First incidence surface, 12... Second incidence surface, 13... Incidence side reflection surface, 14... Base side reflection surface , 20... Base 21... First surface 22... Second surface 23... Side surface 24... First emission surface 25... Inclined part 30... Inclined reflecting surface 40... Protruding part 41... Prism part 42 Second emission surface 50 Light source 100 Vehicle light guide 110 Lamp housing 120 Lamp lens 200 Vehicle lamp

Claims (5)

an incidence control unit having an incident surface on which light is incident, and directing the traveling direction of the light incident from the incident surface to the front in a vehicle-mounted state;
It has a plate-like shape and is arranged such that a first surface and a second surface parallel to each other are positioned on the lower side and the upper side in a vehicle-mounted state. a base portion having a first emission surface on a front end surface for guiding light forward along and emitting the guided light forward;
An inclined reflective surface provided on at least one of the first surface and the second surface of the base and reflecting part of the light passing through the base in a direction inclined with respect to the first surface and the second surface. When,
It is provided so as to protrude downward and forward from the front end of the base with respect to the first emission surface in a vehicle-mounted state , guide the light reflected by the inclined reflection surface, and guide the guided light. A light guide for a vehicle, comprising: a projecting portion having a second light emitting surface for emitting light on the front end face. The vehicular light guide according to claim 1 , wherein the inclined reflective surface is arranged on the upper surface of the base portion in a vehicle-mounted state, and the front side thereof in the vehicle-mounted state is inclined downward. The incident control section is disposed at a rear end portion of the base portion in a vehicle-mounted state, protrudes downward, has the incident surface at a lower end portion, and directs the light incident from the incident surface to the base portion side. Having a base-side reflecting surface at the upper end that reflects to
The vehicle light guide according to claim 2 , wherein the base side reflective surface is connected to the upper surface of the base. The incident control unit includes a first incident surface facing a light emitting surface of a light source that emits light, a second incident surface arranged around the first incident surface so as to surround the light emitting surface, and the second incident surface. 2 an incident side reflecting surface that reflects light incident on the incident surface toward the base side reflecting surface;
4. The vehicle according to claim 3 , wherein the incident-side reflecting surface is arranged such that part of the light incident on the second incident surface and reflected by the incident-side reflecting surface reaches the inclined reflecting surface. for light guide. a light source;
The vehicle light guide according to any one of claims 1 to 4 , wherein the light from the light source is guided and emitted forward in a vehicle-mounted state.

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